Tokyo (Nihonbashi), Japan — Edo period speciality associated with autumn festival
Bettarazuke (べったら漬け) is a Tokyo speciality pickle — whole rounds or halves of daikon pickled in a sweet koji-rice brine until tender and deeply impregnated with sweetness and a fermented sake-like character. The sticky, sugary brine that coats the finished pickle (which gives it the 'bettara-bettara' sticky texture that names it) is distinctive: the koji-saccharified rice syrup creates a natural, complex sweetness quite unlike artificial sweeteners or simple sugar pickling. The finished product is pure white outside with a translucent interior, not excessively salty, and has a pleasantly soft crunch. Bettarazuke is the traditional autumn festival pickle — sold at the October Bettara-ichi (Bettara Market) near Nihonbashi Oji Shrine in Tokyo, a tradition since the Edo period. Eaten as a standalone condiment, it is also sliced thin as an accompaniment to sashimi.
Sweet, sticky, slightly fermented — the sake-like koji character overlaid with complex natural sweetness; soft-crisp texture; much sweeter than most Japanese pickles and unique to the Tokyo/Edo tradition
Bettarazuke requires two stages: initial salt-pickling of the daikon (2–3 days) to draw out moisture and firm the texture; then the koji-rice-sugar brine pickling (3–5 days) for sweetness and fermented character; the kojiyeast in the brine continues low-level fermentation throughout the second stage, producing the characteristic sake-like aroma; keep refrigerated after the second stage to prevent over-fermentation.
Bettarazuke can be approximated at home: salt-pickle daikon rounds (2cm) for 2 days, drain, then soak in a brine of sake + mirin + sugar + a small amount of kombu + sake lees (sakekasu) for 3–4 days refrigerated; the sake lees provide a pale approximation of the koji's complex fermented character; the definitive bettarazuke experience is at the October Nihonbashi Bettara-ichi festival — vendors sell freshly made pickle still coated in its sweet sticky brine from buckets.
Skipping the initial salt-pickling stage (the daikon will be too watery and produce a diluted second-stage brine); over-fermentation (bettarazuke should be sweet and lightly tangy, not sour — refrigerate promptly after desired flavour is achieved); eating the sticky brine rather than wiping it away before serving (the brine is typically wiped off before slicing and serving).
Japanese Food Culture — Naomichi Ishige